20972970

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{467}}^1\times {\mathrm{499}}^1$

素因数の和:979

約数の個数: 48

約数和(自身を含む): 54756000

約数和(自身を除く): 33783030

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 467, 499, 934, 998, 1401, 1497, 2335, 2495, 2802, 2994, 4203, 4491, 4670, 4990, 7005, 7485, 8406, 8982, 14010, 14970, 21015, 22455, 42030, 44910, 233033, 466066, 699099, 1165165, 1398198, 2097297, 2330330, 3495495, 4194594, 6990990, 10486485, 20972970]

約数ペア:

[(1, 20972970), (2, 10486485), (3, 6990990), (5, 4194594), (6, 3495495), (9, 2330330), (10, 2097297), (15, 1398198), (18, 1165165), (30, 699099), (45, 466066), (90, 233033), (467, 44910), (499, 42030), (934, 22455), (998, 21015), (1401, 14970), (1497, 14010), (2335, 8982), (2495, 8406), (2802, 7485), (2994, 7005), (4203, 4990), (4491, 4670)]